Peyton Manning's arithmetic may not do the University of Tennessee proud, but he can pull a prank.

During his passing/workout session with Broncos receivers Demaryius Thomas, Eric Decker and Wes Welker at Duke University, Manning gave Decker an invoice for $3,217.50 for services rendered. The invoice included Duke University letterhead.

There were math discrepancies throughout the bill that included $2,500 for on-field instruction from Duke's coaching staff to $217.50 in taxes.

Decker tweeted: "Nice little practical joke Peyton drew up ... making me think I have to pay for workouts in Duke this week."

Vacation ending.

Denver players, off since packing up their lockers Jan. 13, will return for offseason workouts Monday. Although the workouts are voluntary, all players except offensive tackle Ryan Clady are expected to be at team headquarters next week. Clady is expected to protest his contract offer.

Lockheed says object part of 'sensor technology' testing that ended ThursdayWhat the heck is that thing? It's fair to assume that question was on the minds of many people who traveled along Colo. 128 south of Boulder this week if they happened to catch a glimpse of what appeared to be a large, silver projectile perched alongside the highway and pointed north toward town.

PARIS (AP) — Bye, New York! Ciao, Milan! Bonjour, Paris! The world's largest traveling circus of fashion editors, models, buyers and journalists has descended on the French capital, clutching their metro maps and city guides, to cap the ready-to-wear fashion season. Full Story